Identification of the Starting Group on the First PE Chain Produced by the Phillips Catalyst

2019 ◽  
Vol 52 (15) ◽  
pp. 5750-5760 ◽  
Author(s):  
C. A. Cruz ◽  
M. M. Monwar ◽  
J. Barr ◽  
M. P. McDaniel
Keyword(s):  
Phillips Catalyst

scholarly journals Achieving polydispersive HDPE by N,N,N-Co precatalysts appended with N-2,4-bis(di(4-methoxyphenyl)methyl)-6-methylphenyl

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43400-43411
Author(s):  
Shi-Fang Yuan ◽  
Zhe Fan ◽  
Yi Yan ◽  
Yanping Ma ◽  
Mingyang Han ◽  
...  
Keyword(s):  
Practical Application ◽  
Molecular Weights ◽  
Phillips Catalyst

Introducing a practical application of N,N,N-Co precatalysts for highly linear polyethylenes with wide polydispersity and high molecular weights, targeting HDPE using Phillips catalyst.

scholarly journals Comparison of Support Effects on Phillips and Metallocene Catalysts

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 842
Author(s):  
Qing Yang ◽  
Max Paul McDaniel
Keyword(s):  
High Activity ◽  
Chromium Oxide ◽  
Solid Acid ◽  
Metallocene Catalysts ◽  
Solid Oxides ◽  
Support Effects ◽  
Phillips Catalyst ◽  
Chromium Catalysts ◽  
Catalyst Systems

Both metallocene and Phillips chromium catalysts are used in the commercial manufacture of polyethylene. Unlike most other commercial metallocene systems, the Chevron Phillips Chemical (CPC) platform does not use methylaluminoxane or fluoroorganic boranes. Instead, the support itself serves to activate (ionize) the metallocenes, which then polymerize ethylene at high activity. Most of these solid acid supports can also be used to anchor Cr to make a Phillips catalyst. This provides an interesting opportunity to compare the polymerization responses by these two disparate systems, Phillips Cr and CPC metallocene, when supported on the same solid acid carriers. In this study, both chromium oxide and several metallocenes were deposited onto a variety of solid oxides, under a variety of conditions, and the resulting support effects were observed and compared. Although using seemingly different chemistries, the two catalyst systems exhibited a surprising number of similarities, which can be attributed to the acidity and porosity of these diverse supports.

Photoinduced Ethylene Polymerization on the CrVI/SiO2 Phillips Catalyst

2018 ◽  
Vol 123 (13) ◽  
pp. 8145-8152 ◽  
Author(s):  
Lorenzo Mino ◽  
Caterina Barzan ◽  
Giorgia A. Martino ◽  
Alessandro Piovano ◽  
Giuseppe Spoto ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Phillips Catalyst

Ethylene polymerization on a SiH4-modified Phillips catalyst: detection of in situ produced α-olefins by operando FT-IR spectroscopy

2012 ◽  
Vol 14 (7) ◽  
pp. 2239 ◽  
Author(s):  
Caterina Barzan ◽  
Elena Groppo ◽  
Elsje Alessandra Quadrelli ◽  
Vincent Monteil ◽  
Silvia Bordiga
Keyword(s):  
Ir Spectroscopy ◽  
Ethylene Polymerization ◽  
Phillips Catalyst ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Effect of surface hydroxylation on the catalytic activity of a Cr(II)/SiO2 model system of Phillips catalyst

2015 ◽  
Vol 324 ◽  
pp. 79-87 ◽  
Author(s):  
Andriy Budnyk ◽  
Alessandro Damin ◽  
Elena Groppo ◽  
Adriano Zecchina ◽  
Silvia Bordiga
Keyword(s):  
Catalytic Activity ◽  
Model System ◽  
Phillips Catalyst ◽  
Surface Hydroxylation ◽  
Effect Of Surface

scholarly journals Polymerization on CO-Reduced Phillips Catalyst initiates through the C–H bond Activation of Ethylene on Cr–O Sites

2014 ◽  
Vol 144 (5) ◽  
pp. 805-808 ◽  
Author(s):  
Murielle F. Delley ◽  
Matthew P. Conley ◽  
Christophe Copéret
Keyword(s):  
Bond Activation ◽  
Phillips Catalyst

Vanadium-Modified Bimetallic Phillips Catalyst With High Branching Ability for Ethylene Polymerization

2012 ◽  
Vol 6 (8) ◽  
pp. 346-350 ◽  
Author(s):  
Akanksha Matta ◽  
Yanning Zeng ◽  
Toshiaki Taniike ◽  
Minoru Terano
Keyword(s):  
Ethylene Polymerization ◽  
Phillips Catalyst

Activation and Deactivation of Phillips Catalyst for Ethylene Polymerization Using Various Activators

2016 ◽  
Vol 11 (3) ◽  
pp. 1600046 ◽  
Author(s):  
Yanning Zeng ◽  
Patchanee Chammingkwan ◽  
Ryuki Baba ◽  
Toshiaki Taniike ◽  
Minoru Terano
Keyword(s):  
Ethylene Polymerization ◽  
Phillips Catalyst
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